Banca de QUALIFICAÇÃO: PAULO HENRIQUE CHIBÉRIO

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : PAULO HENRIQUE CHIBÉRIO
DATE: 17/06/2024
TIME: 14:00
LOCAL: Auditorio do Departamento de Fisica
TITLE:

Ceramic tape producing by tape casting for multifuctional applications

KEY WORDS:

Tape casting, dielectric properties, high-frequency substrates, ceramic materials

PAGES: 119
BIG AREA: Engenharias
AREA: Engenharia de Materiais e Metalúrgica
SUBÁREA: Materiais Não-Metálicos
SPECIALTY: Cerâmicos
SUMMARY:

A demand for multifunctional ceramic materials has grown significantly in the last decade. The advancement of dielectric devices has increasingly demanded new materials with low dielectric losses, particularly for applications in new frequency ranges. Dielectric ceramic tapes have recently garnered significant attention due to their diverse technological applications. Among the various approaches to producing these materials, the tape casting technique stands out as a highly popular method for manufacturing homogeneous, flexible ceramic films with controlled thickness, large surface area, and low cost. The aim of this work is to develop, through the tape casting technique, multifunctional dielectric ceramic tapes for high-frequency applications. The stability of ceramic suspensions was analyzed by rheological characterization; the crystalline structure of the ceramic tapes was characterized by X-ray diffraction; the morphological analysis of the tapes was obtained through scanning electron microscopy (SEM) images; high-frequency dielectric characterization of the samples was performed using an Agilent E4991A RF Impedance/Material Analyzer with a dielectric measurement module, at room temperature; capacitance measurements were conducted using the HP 4262A LCR meter and a dielectric material test fixture. It was observed that the tape casting technique showed potential for developing multifunctional substrates for high-frequency technological applications, producing tapes of different compositions, materials, and characteristics.

COMMITTEE MEMBERS:
Interno - 1474380 - MARCIO ASSOLIN CORREA
Interno - 1149564 - WILSON ACCHAR
Externo à Instituição - Antonio Carlos Silva da Costa - IFPB
Externo à Instituição - HUGO PLÍNIO DE ANDRADE ALVES - UFPB